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[" 155.Average score of a class of "60" students,in an exam,"],[" was "43." Average score of the students who had "],[" passed is "52" and the average score of students who "],[" had failed is "16." How many.failed the exam? "],[" IIBPS-RRB Officer's Gr."^(" B ")" Exam,"2015" l "]

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Average score of a class of 60 students, in an exam, was 43. Average score of the students who had passed is 52 and the average score of students who had failed is 16. How many failed the exam? (a) 25 (b) 20 (c) 15 (d) 18

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The average marks of 120 students are 35 . If the average of passed students was 39 and failed students was 15 , then find the number of students who have passed .

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